FR2421242B1 - - Google Patents

Info

Publication number: FR2421242B1
Authority: FR; France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

FR7907973A

Other languages

French (fr)

Other versions

FR2421242A1 (en

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Erco Industries Ltd

Original Assignee

Erco Industries Ltd

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1978-03-30

Filing date

1979-03-29

Publication date

1985-04-26

1979-03-29 Application filed by Erco Industries Ltd filed Critical Erco Industries Ltd

1979-10-26 Publication of FR2421242A1 publication Critical patent/FR2421242A1/en

1985-04-26 Application granted granted Critical

1985-04-26 Publication of FR2421242B1 publication Critical patent/FR2421242B1/fr

Status Granted legal-status Critical Current

Links

Classifications

- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/20—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen
- D06L4/22—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents
- D06L4/24—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents using chlorites or chlorine dioxide

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Inorganic Chemistry (AREA)
Textile Engineering (AREA)
Life Sciences & Earth Sciences (AREA)
Wood Science & Technology (AREA)
Paper (AREA)

FR7907973A 1978-03-30 1979-03-29 Enhanced bleaching of wood pulp suspensions - contg. dissolved organic cpds. using addition first of chlorine di:oxide and chlorine then of chlorine alone Granted FR2421242A1 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB1243378		1978-03-30

Publications (2)

Publication Number	Publication Date
FR2421242A1 FR2421242A1 (en)	1979-10-26
FR2421242B1 true FR2421242B1 (en)	1985-04-26

Family

ID=10004518

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR7907973A Granted FR2421242A1 (en)	1978-03-30	1979-03-29	Enhanced bleaching of wood pulp suspensions - contg. dissolved organic cpds. using addition first of chlorine di:oxide and chlorine then of chlorine alone

Country Status (15)

Country	Link
JP (1)	JPS54134104A (en)
AR (1)	AR220185A1 (en)
AT (1)	AT376249B (en)
AU (1)	AU535076B2 (en)
CA (1)	CA1111607A (en)
CS (1)	CS231164B2 (en)
DE (1)	DE2911334A1 (en)
ES (1)	ES479062A1 (en)
FI (1)	FI791065A (en)
FR (1)	FR2421242A1 (en)
NZ (1)	NZ189914A (en)
PL (1)	PL116704B1 (en)
PT (1)	PT69361B (en)
SE (1)	SE7902741L (en)
ZA (1)	ZA791174B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4409066A (en) *	1978-03-30	1983-10-11	Erco Industries Limited	Bleaching procedure using chlorine dioxide and chlorine solutions
US4325783A (en)	1978-03-30	1982-04-20	Erco Industries Limited	Bleaching procedure using chlorine dioxide and chlorine solutions
CA1120660A (en) *	1979-04-16	1982-03-30	Douglas W. Reeve	Bleaching sequence
US4406736A (en) *	1979-11-29	1983-09-27	Erco Industries Limited	Method of bleaching pulp with an aqueous solution of chlorine dioxide and chlorine followed by a chlorine solution
US4421598A (en) *	1981-08-17	1983-12-20	Erco Industries Limited	Bleaching procedure using chlorine dioxide and chlorine solutions

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
USRE28884E (en) *	1965-06-28	1976-06-29	Hooker Chemicals & Plastics Corporation	Woodpulp bleaching process
CA926056A (en) *	1966-01-10	1973-05-15	C. Logan Kenneth	Process of bleaching woodpulp

1979
- 1979-03-13 ZA ZA791174A patent/ZA791174B/en unknown
- 1979-03-15 NZ NZ189914A patent/NZ189914A/en unknown
- 1979-03-16 PT PT69361A patent/PT69361B/en unknown
- 1979-03-19 AR AR275865A patent/AR220185A1/en active
- 1979-03-21 CA CA323,926A patent/CA1111607A/en not_active Expired
- 1979-03-22 DE DE19792911334 patent/DE2911334A1/en not_active Withdrawn
- 1979-03-27 SE SE7902741A patent/SE7902741L/en unknown
- 1979-03-29 CS CS792099A patent/CS231164B2/en unknown
- 1979-03-29 FR FR7907973A patent/FR2421242A1/en active Granted
- 1979-03-29 AU AU45574/79A patent/AU535076B2/en not_active Ceased
- 1979-03-29 ES ES479062A patent/ES479062A1/en not_active Expired
- 1979-03-30 PL PL1979214517A patent/PL116704B1/en unknown
- 1979-03-30 JP JP3718279A patent/JPS54134104A/en active Pending
- 1979-03-30 AT AT0239479A patent/AT376249B/en not_active IP Right Cessation
- 1979-03-30 FI FI791065A patent/FI791065A/en not_active Application Discontinuation

Also Published As

Publication number	Publication date
FR2421242A1 (en)	1979-10-26
AR220185A1 (en)	1980-10-15
AU535076B2 (en)	1984-03-01
PT69361A (en)	1979-04-01
CS231164B2 (en)	1984-10-15
PT69361B (en)	1986-11-13
PL116704B1 (en)	1981-06-30
DE2911334A1 (en)	1979-10-18
ZA791174B (en)	1980-10-29
AU4557479A (en)	1979-10-04
AT376249B (en)	1984-10-25
CA1111607A (en)	1981-11-03
NZ189914A (en)	1981-07-13
ATA239479A (en)	1984-03-15
ES479062A1 (en)	1979-07-01
FI791065A (en)	1979-10-01
JPS54134104A (en)	1979-10-18
SE7902741L (en)	1979-10-01
PL214517A1 (en)	1979-12-03

Legal Events

Date	Code	Title	Description
1987-01-23	ST	Notification of lapse

Publication	Publication Date	Title
FR2416838B1 (en)	1980-10-17
FR2414367B1 (en)	1982-10-22
DK141793C (en)	1980-11-03
FR2415162B1 (en)	1981-12-11
FR2414735B1 (en)	1983-10-14
FR2415227B1 (en)	1984-09-07
FR2414986B1 (en)	1983-01-14
FR2417158B1 (en)	1984-07-06
FR2414681B1 (en)	1983-02-04
FR2416747B1 (en)	1984-02-24
FR2421242B1 (en)	1985-04-26
DE2849362C3 (en)	1983-12-22
FR2414807B3 (en)	1980-08-22
FR2416908B1 (en)	1980-08-29
AU3898778A (en)	1978-09-28
FR2413670B1 (en)	1981-05-22
AU3803078A (en)	1978-09-04
FR2416426B3 (en)	1980-11-21
DK142857C (en)	1981-10-26
FR2414815B3 (en)	1981-11-13
FR2415095B1 (en)	1980-12-12
FR2415701B1 (en)	1981-02-27
FR2380871B3 (en)	1980-11-14
AU3892778A (en)	1978-10-13
AU73950S (en)	1978-04-07